Looking at our summer maintenance window and wondering if I should upgrade my ZD. I realize that the recommend version is still 10.2.1 but we have a few non-critical issues with the current build (200, MR7 I believe) - several UI issues when attempting to manage the ZD from up-to-date Chrome browser, occasional AP reboot that we did not see on prior MR levels, etc.
All APs are supported on 10.5.1 so basically I'm curious why 10.2.1 is still the recommend version when it's pretty old now!